Graham Robertson says delays in the inquest findings into his son’s death are stopping the family moving on. Picture: Richard Gosling

During the search, they tried to wake Charlie through several methods but were unsuccessful.

Police left Charlie in his pyjamas in bed, before leaving the apartment without calling triple-0.

They were called back later by one of his flatmates, who found the 19-year-old dead, the inquest was told.

Seven police officers were demoted after an Ethical Standards Command investigation and gave evidence at the inquest in March.

During the inquest, barrister for the Robertson family, Philip Beale, put to the officers they colluded with each other to fabricate a story about the 19-year-old's death, saying they believed he was drunk.

Mr Robertson said the family had since September been trying to get in touch with the coroner's office about a time estimate for the findings delivery but had received no reply.

"We have been pushing to get information on when (the coroner) might come back to give our family some understanding of the circumstances and how it never should have happened," he said.

Charlie Robertson was a fitness fanatic who went to the gym almost daily. Picture: Richard Gosling.

"All we want is to get justice for our son and tell his story and we can't do that without the findings."

A spokesman for the Coroner's Court of Queensland said the matter was "still adjourned for a date to be fixed at this stage".

"There is no set time frame for the handing down of findings," a spokesman said.

"There a number of factors that determine the timing, including the volume of material to consider and the complexity of the matter."

The spokesman said no correspondence from the family or the lawyers acting on their behalf had been received about a findings delivery date.

Charlie's family insist their solicitors have made attempts to contact the office several times.